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24

Nina Jablonski says that differing skin colors are simply our bodies' adaptation to varied climates and levels of UV exposure. Charles Darwin disagreed with this theory, but she explains, that's because he did not have access to NASA.

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1

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64

Someone always asks the math teacher, "Am I going to use calculus in real life?" And for most of us, says Arthur Benjamin, the answer is no. He offers a bold proposal on how to make math education relevant in the digital age.

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5

Sita Sings the Blues, by Nina Paley
http://www.sitasingstheblues.com
DVD NOW AVAILABLE! Get the Torrent at the official website's Wiki.
The movie is available for FREE download in 1080p, 720p, and 480p!
Creative Commons Attribution-Share Alike License.

Translations
26

Jane Poynter tells her story of living two years and 20 minutes in Biosphere 2 -- an experience that provoked her to explore how we might sustain life in the harshest of environments. This is the first TED talk drawn from an independently organized TEDx event, held at the University of Southern California.